Electric-generator system



Oct. l2 1926. 7 1,602,787

R. H. SULLIVAN ELECTRIC GENERATOR SYSTEM Filed Oct. 27 925 'flwmmmitm 4 tery voltage,

maintain a generated volta ill Patented Oct. 12, 1926.

UNITED RAYMOND H. SULLIVAN ELECTRIC COMPANY This iiiven STA ELECTRIC-GENERATOR SYSTEM.

tion relates to systems of the type in which a storage battery is charged by an electric generator, netic cut-out interposed with an electromagbetween the battery and 'the generator to prevent return flow of current from the forine r to the latter, and

in which an electromagnetic regulatoris used to control the with respect to some across the generator output of the generator function of the voltage terminals.

Systems of the kind in question are commonly used upon motor vehicles, the

erator being driven, at connection with the me hicle by which it is carri vention is particularly use with such motor vehicle systems, althougheng y V T he present in ful in connection varying speeds, chanism of the ed.

not limited to use in that connection.

For the best results, in in question, it has been adjust both the regulat to respond accurately to systems of the kind found desirableto or and the cut-out predetermined voltages. The voltages to which they respond should have a definite dilferential, such as to insure both that the e as nearly as possible at lit-out shall operate the point where the generated voltage exceeds the maximum batand that the regulator shall go enough higher than that to which the cut-out responds, to

prevent the cu speed in the generator..

t-out from operating except when it is necessary owing to insufficient It is common to provide regulators and cut-outs with means by which they may be ad ditl'erent voltages, and

kind in question it is therefore possible, with of the ordinary means of adjustment, to ad ust the system for the use j usted to respond to in a system of the a higher or lower voltage, as may be desirable under varying conditions of use,-and at the same time to maintain the correct differential between the regulator and the cut-ou t. Such adjustment of the system, however, requires a higher degree of skill and attenti pected of those ordinal-i on than may be exly in charge of the maintenance of such systems, and the object of the present invention tem, of the kind in qu is to provide a sysestion, with simple and convenient means by which adjustment may be made to change the normal voltage of the system when desirable, and by which the necessary relative adj Iilator and I maintained, so that hot ustment' of the regthewcutout will be automaticall h instruments sha 1 OF ROCHESTER, F ROCHESTER, NE

NEW YORK, ASSIGNOR TO NORTH EAST w YORK, A CORPORATION or NEW YORK.

Application filed October 27, 1825. Serial No. 65,184.

be adjusted by a single operation, and in the same sense.

, To the foregoing end it is proposed to use i'heostatic means adj her, or through a si and connected with ustable by a single memngle manual operation, the voltage WlIlCllIlgS of the instrument in such a way that a simul-.

taneous adj in the amount of c these two windings,

across the generator rheostat, connected the two windings, ment for c rrying other substantially equivalent arrangements ustment iii the same sense is made urrent flowing through under a given voltage terminals. A single in a single series with s the simplest arrangeout the invention, but

will readily suggest themselves to those skilled in the art.

The accompanying of an electric generator system embodying the present invention.

In the system diag a generator 1 is sho storage battery 2 a including translation 3, these elements bei allel across drawing is a diagram rainmatically illustrated wn as connected with a nd witha load circuit devices such as lamps ng all connected in parmain conductors 4 and 5, the

battery being thus floated .on the line, in

the manner usual in such systems. Interposed in the main conductor 5 isa clit-out of the ordinary form, 6 and a ma net 7, series winding ing 9,- this latter'wi causes the initial The output of.

comprising an armature The magnet has the usual 8-and shunt or voltage windnding being that which closing of the cut-out contacts upon the attainment of a sufiicient voltage by the generator. 1

the generator may be controlled in various ways, but the usual and simplest manner erator. y

p In the diagram, 1 as provided with a may be connected ei terminals, as shown one terminal and a latin'g brush .11, as

is to control the flow of cur rent through the field winding of the genthe generator is shown shunt winding 10, which 1 ther across the generator in -full lines, or between supplementary or regushown in dotted lines.

An external resistance 12 is interposed in the connections between the' field winding and the terminals, and this resistance is controlled, in turn, by

the regulator, which is shown asof the ordinary vibratory electromagnetic type.

comprises a springandthe contacts con The regulator, as shown,

controlled armature 13,

trolled by this armature 119 g are connected in shunt across the resistance 12,so as to control the efiect of the latter upon the field circuit in the usual manner. The parts so far described are all well known in their construction and mode of operation, but the novel feature of the system which constitutes the present invention, resides in the use of a manually operable rheostat 17, and in the connection of this rheostat with the voltage windings 9 and 16 in a manner to control the current flowing through these windings. As shown in the diagram, the windings and the rheostat are all in. series. In any given position of the rheostat, the cut-out and the generator will respond to predetermined voltages across the main conductors l and 5, and by independent adjustment of one or both of the two instruments, by any of the ordinary means, asuitable diiierential in, their critical voltages may be secured. If now it be desired to set the regulator to maintain, for example, a lower voltage across the genera tor terminals, all that is necessary is to move the rheostat in a direction to reduce the resistance in the circuit controlled by it. This causes a greater current to flow through the series windings under a given impressed voltage, with the result that the generator acts to open its contacts in response to a lower voltage, thus maintaining the gener ated output at such lower voltage. Since the same movement ofthe rheostat produces a corresponding efiect with relation to the voltage winding of the cut-out, the correct differential between the cut-out and the regulator is maintained at such lower voltage, and thus no direct or independent adjustment of either of the instruments is necessary.

The invention claimed is 1. In an electric generator system comprising a 'enerator, a storage-battery charged there y, an electromagnetic regulator controlling the enerator and provided with a voltage win ing, a cut-out controlling the connections between the generator and the battery and provided with a voltage Winding, and circuit connections between said voltage windings and the terminals of the generator; means, associated with said circuit connections, manually operable to vary the resistance thereof so as to adjust the regulator and the cut-out simultaneously to respond to a higher or lower voltage across the generator terminals.

2. In an electric generator system comprising a generator, :1. storage battery charged thereby, an electromagnetic regulator controlling the generator and provided with a voltage winding, and a cutout controlling the connections betiveen the generator and the battery and provided with a voltage winding; a rheostat, and circuit connections connecting said voltage windings and said rheostat in series across the generator terminals, so that adjustment of the rheostat varies simultaneously the current flowing through the two voltage windings under a given generated voltage.

RAYMOND H. SULLIVAN. 

